Notion is a great note-taking application. It's really flexible and useful for many different things. I use it with my partner to meal plan for the week and set our goals we want to accomplish. At work, we use it exclusively as our main Knowledge Base. It's free to get started, so I'd highly suggest you check it out and see if it might improve your productivity workflows!
I have a tendency to rely on my Notes pad in my iPhone, but it feels disorganized and disjointed. I’ll have to see what this is all about!